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laiz [17]
3 years ago
9

What is the reason for heat transfer from one substance to another? A. difference in pressure B. difference in volume C. differe

nce in temperature D. difference in mass
Chemistry
2 answers:
Sedbober [7]3 years ago
6 0
<h2>Hello!</h2>

The answer is: C. Difference in temperature

<h2>Why?</h2>

Heat transfers to another substance until the thermal equilibrium is reached, it means that the average temperature between the substance is almost equal or equal. Heat transfer means that the temperature will be transferred from the higher temperature substance to the lower temperature substance.

There are three ways of heat transfer:

- Conduction: When the substances are in contact.

- Convexion: When the heat transfer involves liquid or gas displacement. For example, the sun heating the surface, causing a displacement of warm air and cold air.

- Radiation: When thermal radiation happens, it does not involve any contact between surfaces or substances. For example, the heat transferred by a light bulb.

Have a nice day!

gulaghasi [49]3 years ago
4 0

Answer

C. Difference in temperature

Explanation

According to thermodynamics, heat transfer occurs when heat from a high temperature reservoir moves to a low temperature reservoir. For heat to be transferred, the two objects should have different temperatures with one having more temperature than the other. Heat transfer in solids is by conduction, in fluids is by convection and by radiation.

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To indicate the pH of a substance, one can use a dye that is both an acid and that appears as different colors in its protonated
PIT_PIT [208]

Answer:

<em>The pH of the solution is 7.8</em>

Explanation:

The concentration of the solution is 0.001M and  the dye could be in its protonated and deprotonated forms. If the concentration of the protonated form [HA] is 0.0002 M the concentration of the deprotonated form will be the subtraction between the concentration of the bye and the concentration of the protonated form:

[A-] = 0.001M - 0.0002M = 0.0008M

Also, the Henderson-Hasselbalch equation is

pH = pKa + Log \frac{[A^{-}]}{[HA]}

this equation shows the dependency between the pH of the solution, the pKa and the concentration of the protonated and deprotonated forms. Thus, replacing in the equation

pH = 7.2 + Log \frac{0.0008M}{0.0002M} = 7.8

3 0
3 years ago
A sample of liquid mercury is heated from 20°C to 40°C. Which measurement of the sample will increase during this process? volum
Paladinen [302]

its volume this is the answer because the mercury will turn into gas. gas has more volume because it takes up more space as it spreads.

3 0
3 years ago
A solution is made by dissolving 4.8 moles of salt in 1.6L of solution. What is the molarity
goldenfox [79]

Answer:

3M

Explanation:

moles ÷ liters = molarity

4.8 ÷ 1.6 = 3M

3 0
3 years ago
Which of these formulas is NOT consistent with the guidelines for creating ionic compounds? Mark all that apply.
iVinArrow [24]

Answer:

d

Explanation:

because boron and fluorine are both nonmetals and don't fit the guidlelines for creating ionic compounds

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